Feeder for molten glass.



K. E. PEILER.

FEEDER FOR MOLTEN GLASS.

APPLICATION mtu Aue-,6. |912. nenn/fu Nov. 2s. me.

Patented Aug'. 2T, IJl8.

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APUCTION RENEWED NOV- 28. 19H?, Y 1,277,254. Patnted Aug. 2T, i918..

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FEEDER FOR MOHM GLASS. APPucAnon msn Aus-.5.19m neun/:o Nov. 2n. wle.

3 z Ufff/265566: ffm Kaff/Pelzer UNITED STATES PATENT OFFICE.

KARL E. PEILER, 0F HARTFORD, CONNECTICUT, ASSIGNOR TO HABTFORD-FAHONT COMPANY, 0F CANAJOHABIE, NEW YORK, A CORPORATION OF NEW YORK.

FEEDER FOR MOLTEN GLASS.

To all whom it may concern.'

Be it known that I, KARL E. PEILER, a citizen of the United States, residing ^at Hartford, in the county of Hartford and Stat-e of Connecticut, have invented new and useful Improvements in Feeders for Molten Glass, of which the following is a specification.

The object of this invention is to provide simple, effective and convenient means for separating and feeding molten glass in uniform masses or drops, and at uniform intervals of time to glass shaping molds or to other devices or for other pur oses for which such uniform separating an( feeding of molten glass is desirable.

The problem of separating molten glass into uniform masses and delivering them smoothly and free from threads in regular and reliable succession at predetermined intervals of time is especially difficult because of the viscosity and other eculiar pro erties and characteristics of molten g ass, whereby it adheres tenaciously to feeding or gathering implements unless the latter are rept. cool, in which case they are liable to injuriously chill the glass. The separation of molten glass into drops or masses tends to draw it more or less unequally and irregularly into threads, which chill quickly and thus further increase the diiliculty of separating the masses uniformly and maintaining them in the uniformly heated and plastic condition which is essential for pressingrr or blowing or otherwise shaping the glass to best advantage.

In the present invention, these difliculties are overcome by flowing the molten glass from a inciting tank or furnace or other source of supply through and from an outlet in a succession of waves or surges, propagated by means of a sweep of refractory material which is moved back and forth through the glass, sweeping the required mass of glass past the outlet on its advance stroke and preferably making its return stroke in a different path. The outlet preferably terminates with alow Wall or dam, over which the glass in front of the sweep is pushed by the sweep in waves or surges, which settle down on the outer side of the dam in drops or globules which may be Specification of Letters Patent. Application `tiled August 6, 1912, Serial No. 713,538.

. tank or furnace,

Patented Aug; 27, 191s. Renewed November 2s, me. seran n. masas.

made to take a pear shaped form, suspended for the moment from the outlet b an attenuating thread of the'glass. or some purposes, the weight of the suspended glass may be relied u on to sever its suspending thread. But w 1ere uniformity, and especially rapidity of action is required, it is preferable to provide other means, shown herein as shear blades, for severing the suspendin thread at the required periods. The suspen ed end of the severed thread of glass, relieved from the weight, is retracted by its own inherent tendencies, aided by its continued connection with the succeedin wave of glass, which as the sweep is mov back for the next instalment of glass sinks down on the inside of the dam, thus tendin to draw the thread back over the dam, an thereby reincorporating it with the glass with winch it remains connected". 'l'his incorporation or absorption is preferablv alded by heat from a jet or flame, which pla.ys upon the outlet, and thus serves to mamtaln the glass and the threads at a temperature which keeps them in uniformly plastic condition. y

Figure 1 of the drawingsv is asidevlevg of a preferred embodiment of this lnventron, shown in connection with a glass meltingV which is shown in. section taken approxin'lately along its longltudlnal center. Fig. 2 is a front View projected from Fig. 1. Fi 3 is a plan 4View projected from Figs. 1 an 2, and Fig. 4 is a front vlew in section taken on the lines 4-4 of Fi 1 and 3. The upper rails for the carriage are omitted in Figs. 2 and 3, to enable other parts to be shown more Eclearly. l

Figs. 5 to 9 inclusive are side views in section taken approximately through the longitudinal center ofthe conduit, showing in enlarged scale the successive positions o the sweep, and thus illustrating the steps of its resulting operation.

The glass melting tank or furnace' 1 containing a supply of molten glass 2 is 'provided with an outlet herein shown as a conduit 3, into and along which the glass Hows from the tank, and is maintained at approximately uniform level, either as a result of the operations of a so-caled continuous melting tank, or Yby other welly proximatel at 9 to allow the sweep through the slot,

`desired ,the carriage 14 by known means or methods. The discharging end: of the conduit preferably terminates in' a low wall or dam 4, the top of which is apat the normal evel of the glass in the con uit, as shown in Fig. 1, the outer side of the wall or dam being provided with a depending apron or lip 5 to carry the glass clear of the end of the conduit. The con duit is preferably inelosed by a hood 6 to retain the heat, which ma be augmented by a jet or llame of gas rom one or more nozzles 7.

The molten lass is impelled toward the end of thereon uit and over the dam in successive waves or surges, each containing the required volume of glass for the desired drop', propagated by means of a sweep 8 of refractory material, which projects from above into the glass, and is carried forward a back therein, as illustrated in Figs. 5 to^9 inclusive, the forward and backward movements of the sweep being preferably made in different paths, especially when working `in a conduit, so that the sweep upon its resome of the ood is slotted 8 to project through it into the conduit and to move through its ath. The slot 9 is preferably covered y a shield 10, which is secured to turn stroke asses over or b forward flowing glass. The

23. This shield prevents undue loss of heat and protects the adjacent larriage and other mechanism from that The sweep 8 is sup rted by a carriage 14 by means of which 1t is carried longitudinally back and forth along the conduit. The carriage is shown to be provided with antifriction wheels 15, preferably four in number, which roll between the rails 16 and 17, thereby guiding the carriage in its longitudinal movement, which is imparted by meansvof a cam 18 upon the cam shaft 22, acting upon the pin or roller 19 appartenant t0 the cam arm 20, which is pivoted at 21 and has upon Iits lower' end a slotted and swiveling conn 'on with a rod 26 connected to the carriage 14. The swiveling connection 24 is adiustably clamped in the slot 25 of the cam arm 20, and may be raised or lowered thereon to shorten or len hen the path of movement of the sweep, an the rod 26 passes through the swivel Joint and is provided 4with nuts 27, by means of which the connection with the carriage 14 may be lengthened or shortened, thus correspondingly changing the lengthwise position Vof its operating stroke or path, relative to the conduit, instead of or in addition to altering the amplitude of the stroke.

The carriage rails 16 are attached to and supported by a yoke 28, which is fitted for vertical slidinp movement upon the rods or standards 29 and 30, which may extend upmeans of suitable clamps or be Rising when required, is

wardly from the base of the machine supported in any convenient way. and falling movement, imparted to the yoke 2S, and consequently to its carriage 14, by means of a cani 31, upon the cam shaft 22 engaging with the pin or roller 32 upon the yoke 28. The cam 31 determines the height to which the sweep 8 is lifted, preferably avoiding lift-ing the sweep entirely out of the glass. The limit of the downward stroke 1s determined by nuts 33 on the rods or standards 29 and 30, which serve as stops for the yoke, and may be adiusted to varv the lower active position of the sweep. The cams 18 and 31 are herein shown to be open cams, which therefore act positively in only one direction, the return movement of the carriage 14 being in this Acase caused bv the tension spring 34 attached between two posts 35 and 36, the former of which is attached to' the carriage and the latter to the carriage rails. 'lhe weight of the carriage 14 and its supportin yoke 2B are relied upon for causing the ownward movement of the carriage when permitted by the cam 31; but cams having closed paths may obviously be employed whenever preferable. f

The cam shaft 22 is herein shown to be supported near its ends by the brackets 37, extending from any convenient frame or support. Rotary movement is imparted to the shaft by fmeansof a belt from any convenient source of power applied to the pulley 38 or in any other convenient way, in synchronism with the movements of the press or other machine withwhich the feeder may be employed.

The severing mechanism herein shown consists of a pair of shear blades 42 and 43 attached to the hubs or collars 44 and 45 of the bevel gears 46 and 47, respectively, those gears being iournaled for turning movement uplcn arms of the bracket 48 supported upon t e I-beam 49. The bevel gears 46 and 47 mesh with the drivinlievel gear 50, fixed upon one end of the ft 55, which is journaled in the bracket 48, and has iixed upon its o posits end anarm 56 connected by the 57 with a bell-cranked arm 58, which is pivotally mounted at 59 u pn a supporting arm or bracket 60 exten mg from the standard 30. The other end of the bellcranked arm 58 engages by means of a pin or roll 62 with a cam path in the side of the cam 61, also the camshaft 22.

The sweep of refractory material 1s preferably removably attached to the carriage 14, being connected therewith by means of the pin 12, or by means of any suitable holding or clamping connections. The upper end of the sweep is here shown to be rovided with an eye 13, to receive the en of a hook, by which the sweep may be removed from the carriage upon removal of the pin 12, or by loosening the clamping or other holding means.v

In the operation of Vthis mechanism, the sweep 8 starting from its retracted and lower position illustrated in Fig. 5 is moved forward througih the position shown in Fig. 6 to that of ig. 7, pushing before it a suitable quantity of glass, which surges over the dam 4 and settles down as shown in Fig. 7 in the form of a drop or globule 11, the suspending thread 66 of which is then severed by the shear blades 42 and 43, as illustrated in Fig. 8. Meanwhile, the sweep has been raised, thus allowing the glass in front of it to sink down at 65, behind the dam, and thereby stfgiping the further iow of lass over the am and serving to retract t e glass and thus attenuate the connecting thread 66. The heat confined by the inclosed hood 6, augmented when necessary by the flame from a gas jet 7, maintains the glass in plastic condition, so that the stub of thread is more or less reabsorbed into and incorporated` with the succeeding wave of glass to be brought forward by t e next active stroke of the sweep. Having thus delivered a drop or massy of glass, the sweep moves back in the direction of the arrow shown in Fig. 8 to its retracted position shown in Fig. 9, from which it is then moved downwardly to the position shown in Fig. 5, thus getting behind another quantity of glass which meanwhile has flowed forward to fill up the depression left in front of the sweep by the discharge of the previous wave. The arrows shown upon the swee in Figs. 5, 6, 7, Sand 9 indicate the direction of the next movement of the sweep from the respective positions shown in these figures, these movements, being imparted by means of the cams 18 and 31 act upon the carriage 14 and its .raising an lowering yoke 4 28 already described.

The severed drops of lass may be delivered to the molds or ot er receptacles for which they are intended, either by falling directly into the molds, or by falling upon a chute or conveyer by whicha/the drops are transported to t eir destination. The length of the conduit ma be proportioned an the desired location. Or it may be s ort, projecting from the tank or other receptacle for the glass only far enough to form a lip to hold the surslended drops free from the side of theta or container and prevent them from dripping down the side. In this case, the stroke of the sweep may extend backwardly into the tank, or into a pool of glass. In such an arran ent the sweep may be moved forward an back in the same path, since the glass is enabled to i'low in ront of the sweep from the sides of the path of movement ofthe sweep, when the latter is in its backward position.

disposed so as to de iver the dro s atV The upper ard rail 17 may be omitted as shown in igs. 2 and 3 by making the carriage sufficiently heavy, or otherwise providing for holding it down upon the lower y rails 16, to prevent it from being tilted by the resistance of the lass. A

The mechanism which is here shown to be supported upon standards or arms adjacent to or appurtenant to the furnace itself may be combined with or suported by the framing of the machine or ot er apparatus with which the feeder is to be employed. .Thus in various ways which will be obvious to those familiar ,with this art, the features of this invention my be modified in various wa s to suit di erent circumstances or conditions of servicev In my co-pending application, Serial Number 133948, filed as a division' or continuation of this application, I have described and claimed p which the apparatus of this application is adapted to perorm.

I claim as my invention :f-

1. In apparatus for feeding molten glass, the combination of a container for the glass, and means for propagating waves or surges of theglass in a re lated succession toward and over the side o the container.

2. Apparatus for feeding molten glass, including a conduit, a sweep of refractory material, means for supporting the sweep witha portion thereof rojecting in to an remaining in the glass in the conduit, and means for moving the sweep back and forth along the conduit.

3. The combination, in feeders for molten glass, of a container for the glass, and means including a horizontally reciprocating sweep for propagating regulated waves or surges along the surface portion of the glass toward and over the side of the container.

4. Means for se arating molten glass into mold ,charges inc uding in combination a conduit for the glass, and a horizontally reciprocating sweep for propagating a regulated succession of waves or surges of the glass along the conduit.

5. The combination, in-feeders for molten glass, of a conduit for the glass, and a sweep mounted for regulated' movements in and Y horizontally along the conduit for discharging molten glass therefrom in timed mold char 6. The combination,`in. feeders for molten glass, of a conduit for the glass, and a sweep mounted for movement horizontally along the conduit to advance a regulated succession of waves of the molten lglass along the conduit and over the end thereof in a succession of mold charges. .Q

7. Means for separating molten glassinto mold charges, includin glass, a sweep moun for regulated reciprocating movement along the conduit to separated and a conduit for the after each surge has passed over the dam to v and a sweep 'mounte Y Vthroul a higher ath. v 15 Les.

discharge waves of the molten lass therefrom, and cordinated means or severing the discharged waves of glass.

8. Means for separating molten glass into mold charges, including a conduit connected with a supply of glass and having a dam at its outlet, regulated reciprocatingh means projecting into and remaining in e glass for propagatin timed waves or surges of the glass over t e dam, and severing means cordinated with the wave propagating means for severing the successive masses of glass depending from the dam.

9. Means for separating molten glass into mold charges, including a conduit connected with a supply of glass and having a dam at its outlet, and regulated means or propagating successive timed surges of glass along the conduit toward and over the dam,"an for drawing back the glass from the dam,

attenuate the glass between the said surges.

10. The combination, in feeders for molten glass, of a conduit for the glass rovided with a retainin dam for the ass,

for regulated o zontal movement in the conduit to sweep the glass in successive regular masses toward andover the said dam. i

11. The combination in feeders for molten glass, of an outflow conduit for the glass, provided with side walls, and with a dam or confining the glass at its normal level,r

and a sweep mounted for regulated movement between the side walls, and toward the dam for swee ing the glass along the conduit and disc ar in it in succeive regular masses over t e am.

12. The combination, in feeders for molten lass, of a conduit for the lass, provide with side walls, and with a am lower than the side walls for coniiiing the glass at its normal level, and a sweep or paddle conforming approximately to the side walls of the conduit and mounted for movement between said walls longitudinally of the conduit toward the dam, fpr advancing the glass along the conduit/and discharging it over the dam.

18. The coinbination in feeders for mol ten glass, of a conduit for the glass, a sweep,

and. alon e conduit, by one path and returniiigfie sweep by a different path to advance the glam in succeive ar masses of wave formation.- t

14g. The combination ten of a conduit for the ghisa a sweep mounted for movement in 'and ong the conduit, cordinated means for moving the sweep to advance the lglass along the conduit and for raising an returning the Sweep m fofmsargingmian gli a container, including invcombinaton ,a cliiferentI ated means for moving the sweep ,molten glass, afprotecting duit, a sweep o refractory in feedei'sfor, molnaman `iii the container toward one side wall thereof, and means for thus moving the sweep and for returitililng it to its first position by 16; Means for dischargin molten glass from a container, including in combination a sweep suspended in the glass, and movable horizontally toward a side wall of the container, means for thus moving the sweep toward the side of the container, and means for raising the swee and returning it to its {irst position by a iierent path.

17.7A conduit for molten glass, a sweep, means for reciprocating the sweep throu h the glass in the conduit in different pat and means for' adjusting the lengths of the paths.

118. A conduit for molten glass, a swee means for reciprocating the sweep tlircu the glass in the conduit, in var ing patgs, and means for adjusting the `position of the said paths lengthwise of the conduit.

19. A conduit for molten glass, a sweep, means for reciprocating the sweep to carry it through the glass in one path and to return the sweep in a dill'erent path, means for adjusting the length of the reciprocat' movement of the swee andmeans for a justing the variancer tween its forward and return paths.

20. conduit for molten glass, a sweep, a cama supporting the sweep and mounted rfor ongitudinal movement and a carriage supporting yoke mounted for vertical movement for raising and lowering thesweep as it is moved by the carriage.` t

21. The combination ofy a conduit for molten glass, a sweep, a sweep-supporting carriage mounted for movement longitudinally of the conduit, a carriage-supporting oke mounted for vertical movement, means or reciproca the cai-ringe, and means for raising and owering the yoke, all arrangedv and o rating to move the sweep aln the con uit in one path and to return fitto its first position by a dilierent path.

A22. The combination of a conduit for molten glass, a protecting hood for the conduit, a sweep projected through the hood into the conduit, and means outside of the bood'and conduit for reciprocating the sweep horizontally along the conduit.

23. The combination 'of a conduit for hood for the conmaterial projecting through the hood into the conduit, and sweep mechanism protected by the hood fromthe heat, and exposed for observation the sweep and adjustment for supportuf and reciprocatiiig itl horizonte along the conduit to advance the glass along the conduit and discharge it therefrom.

24. The combination of a co for molten glass, a hood inclosing the conduit Y ir above the and confining the heat of the glass, a sweep extending through the hood into the glass, andsweep mechanism outside of and protected from the heat by the hood for su porting the swee and moving it lateral y, :in a path extending lengthwise of the conuit.

25. Means for separating molten glass into mold charges including in combination with a tank or reservoir for the glass, a conduit having its 'Hoor below thesurface level of the glass in the tank, and provided with a dam avinE a de ending lip, a sweep projecting into t e con uit and partially submerged in the glass, and regulated means for moving the sweep lengthwise along the conduit toward and approximately to the dam for advancing the glass along the conduit 1n timed successive surges, arranged to draw back thev glass from the crest of the dani, as each successive surge' hangs from the depending lip, to attenuate the connecting thread of glass, for the purpose specified.

26. The combination of a` glass melting g5 furnace inl which the lass has a normally clear and unobstru surface, of a discharge outlet above the general level'of such surface, means adjacent to 'the outlet for causing the discharge of from the outgg let by raising above the evel of the outlet the surface level of a part of\ the glass immediately adjacent to the outlet, without raising above its normal level the free Surface .o other rts of the glass more remote from the 011 Bt. i

27 Thecombination with a lass melting furnace having a discharge ou t above the general levelof the glass in the furnace, of means adacent to the outlet for raising' evel'ofthe outlet a portion of the glass between said means and the outlet, without the surface level of the rest ofthe glassm thefurnace and n IL :m

for moving said means toward and from the outlet.

28. The combination with a glass melting furnace having a` discharge out et above the general level of the glass in the furnace, of means for substantia y segregating -a pool of the glass adjacent to the said outlet, and for horizontally contractin the pool to raise its surface level above the evel of the outlet at timed intervals.

29. The combination with a lass melting furnace having a discharge ou et above the general level of the lass in the furnace, of

means for substantie ly segregating a pool of the glass 4adjacent to the outlet, and mechanism for moving the segre ating means toward the outlet'to contract tally and raise its surface level above the dischar e outlet at timed intervals. p

30, e combination with a lass melting furnace having a discharge out et above the general level of the g-llass in the furnace, of `means for substantie y segre ting ya pool of the lass adiacent to the out et, and mechanism or moving the segregatmg means towardthey outlet to contract the pool in a -horizontal direction, whereby its surface KARL E. PEILER; Witn: d

'Winnen A. LoiiiiNz,

E. Re Anno'rr.

e pool horizon? ctlon In Lettrs Patent No. 1,277,254.

A 1r. in hmby nidh in Lamm Bmpr No. 1,217,254, gl-gud Augugt. 21,

19178` upon the application .of Karl E. Pler, .of H'tford, Connecticut, for sn improvement in lEdm-I4 for lloltexLGhs," an s rror appears in tbn pfinted poc- .tpn oorretqn fallan: Page 4, claimzl, strike out linea 96.436

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